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| author | Jon Santmyer <jon@jonsantmyer.com> | 2026-09-04 11:31:40 -0400 |
|---|---|---|
| committer | Jon Santmyer <jon@jonsantmyer.com> | 2026-09-04 11:31:40 -0400 |
| commit | 8251da342161767fe203627223ccd4a7026701c6 (patch) | |
| tree | af2db0f11b0ea8ad35f88663a855bab39a80f679 /arch/x86_64/hal/lxdt.s | |
| download | jove-kernel-8251da342161767fe203627223ccd4a7026701c6.tar.gz jove-kernel-8251da342161767fe203627223ccd4a7026701c6.tar.bz2 jove-kernel-8251da342161767fe203627223ccd4a7026701c6.zip | |
initial commit. working on tasking
Diffstat (limited to 'arch/x86_64/hal/lxdt.s')
| -rw-r--r-- | arch/x86_64/hal/lxdt.s | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86_64/hal/lxdt.s b/arch/x86_64/hal/lxdt.s new file mode 100644 index 0000000..1591599 --- /dev/null +++ b/arch/x86_64/hal/lxdt.s @@ -0,0 +1,26 @@ +.global load_gdt +.type load_gdt @function +load_gdt: + lgdt (%rdi) +.reload_segments: + pushq $0x8 + leaq .reload_cs(%rip), %rax + pushq %rax + retfq +.reload_cs: + movw $0x10, %ax + movw %ax, %ds + movw %ax, %es + movw %ax, %fs + movw %ax, %gs + movw %ax, %ss + retq +.size load_gdt, . - load_gdt + +.global load_tss +.type load_tss @function +load_tss: + movw $0x30, %ax + ltr %ax + retq +.size load_tss, . - load_tss |